Finding the Fourth Proportional to 81,989,857.59, 113,146,756.34 and 46,707,139.78

Step by Step Solution

1. Step 1: Write the proportion equation
   81,989,857.59 : 113,146,756.34 = 46,707,139.78 : x
2. Step 2: Convert to fraction form
   81,989,857.59/113,146,756.34 = 46,707,139.78/x
3. Step 3: Cross multiply
   81,989,857.59x = 113,146,756.34 × 46,707,139.78
4. Step 4: Simplify right side
   81,989,857.59x = 5,284,761,363,509,579
5. Step 5: Solve for x
   x = 5,284,761,363,509,579/81,989,857.59
6. Step 6: Final answer
   x = 64,456,281.77